Abstract: PURPOSE: To explore the clinical effect of continuous oral health education on elderly patients with chronic periodontitis treated with dual wavelength lasers. Methods: The clinical data of 150 elderly patients with chronic periodontitis treated with dual-wavelength laser in Shanghai Ninth People's Hospital between March 2016 and March 2018 were analyzed and divided into 2 groups according to the different intervention plans applied. Seventy-five cases receiving routine oral hygiene education were taken as the control group, and the other 75 patients receiving continuous oral health education were set as the experimental group. Oral behavior, gingival index and dental plaque index in the two groups were analyzed and compared using SPSS 21.0 software package. Results: The proportions of patients with correct brushing, taking regular oral examination and maintenance, and keeping good oral habits in the experimental were 97.33%, 93.33% and 92.00%, respectively, which were significantly higher than those in the control group (P<0.05). The gingival index and dental plaque index 3 and 6 months after intervention were (1.24±0.14) and (1.08±0.10), (1.50±0.10) and (1.69±0.26), respectively in the experimental group, which were significantly lower than those in the control group (P<0.05). Conclusions: For elderly patients with chronic periodontitis treated with dual-wavelength laser therapy, application of continuous oral health education can improve their oral behavior and periodontal status, therefore is worthwhile to be popularized in clinical application.

Key words: Chronic Periodontitis, Elderly patients, Double-wavelength laser, Oral health education, Oral behavior